Table 1

Profile of patients at onset

HSPNIgA nephropathy
Number of patients4079
Male/female18/2241/38
Age at onset (years)
Mean (SD)8.3 (3.0)11.7 (2.7)1-150
 Range4–154–15
Mode of initial presentation
Screening1-151 073
Nephritic/nephrotic symptoms405

  • ↵1-150 p < 0.05 v HSPN.

  • ↵1-151 Urinary abnormality detected at mass screening performed every 6 or 12 months in all Japanese school children.

  • HSPN, Henoch-Schönlein purpura nephritis.